31145425025243 has 32 divisors (see below), whose sum is σ = 33228426739200. Its totient is φ = 29129816491776.

The previous prime is 31145425025237. The next prime is 31145425025261. The reversal of 31145425025243 is 34252052454113.

It is not a de Polignac number, because 31145425025243 - 2⁴² = 26747378514139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31145425025243.

It is not an unprimeable number, because it can be changed into a prime (31145425025543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1437050255 + ... + 1437071927.

It is an arithmetic number, because the mean of its divisors is an integer number (1038388335600).

Almost surely, 2^{31145425025243} is an apocalyptic number.

31145425025243 is a deficient number, since it is larger than the sum of its proper divisors (2083001713957).

31145425025243 is a wasteful number, since it uses less digits than its factorization.

31145425025243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28611.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 31145425025243 its reverse (34252052454113), we get a palindrome (65397477479356).

The spelling of 31145425025243 in words is "thirty-one trillion, one hundred forty-five billion, four hundred twenty-five million, twenty-five thousand, two hundred forty-three".